:root {
    --default-font: "SF Pro Text", "SF Pro Icons", "Helvetica Neue", "Helvetica", "Arial", sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    /* Colors */
    --primary: #4b2e7f;
    --primary-light: #6d529f;
    --background: #fafbff;
    --surface: #ffffff;
    --text: #2c3e50;
    --text-light: #6c757d;
    --border: #e1e8f5;
    --error: #d32f2c;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;

    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(107, 127, 247, 0.1);
    --shadow-lg: 0 10px 15px rgba(107, 127, 247, 0.1);

    /* Border radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-full: 9999px;

    scrollbar-color: var(--primary) transparent;
    accent-color: var(--primary);
}

@media (prefers-color-scheme: dark) {
    :root {
        --primary: #8b6cc9;
        --primary-light: #a589d9;
        --background: #1a1a1a;
        --surface: #2d2d2d;
        --text: #e1e1e1;
        --text-light: #c2c2c2;
        --border: #404040;
        --error: #ed504d;
        --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.2);
        --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.25);
        --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.3);
    }
}

/* Base styles */
body {
    margin: 0;
    background-color: var(--background);
    padding: var(--spacing-md);
    color: var(--text);
    line-height: 1.6;
    font-family: var(--default-font);
}

header {
    margin-bottom: var(--spacing-xl);
    text-align: center;

    h1 {
        margin: 0;
        margin-top: var(--spacing-md);
        color: var(--primary);
        font-size: 3.2rem;

        rt {
            -webkit-user-select: none;
            opacity: 0;
            transition: opacity 0.2s ease;
            pointer-events: none;
            user-select: none;
        }

        ruby:hover rt {
            opacity: 1;
        }
    }

    h2 {
        color: var(--text-light);
        font-weight: normal;
        font-size: 1rem;
    }

    img.logo {
        margin: 0;
        width: 50px;
        height: auto;
    }
}

p a {
    color: var(--primary);
}

p a:hover {
    background-color: var(--primary);
    color: var(--background);
    text-decoration: none;
}

/* Panels */
.panel {
    margin: 0 auto;
    box-shadow: var(--shadow-md);
    border-radius: var(--radius-lg);
    background-color: var(--surface);
    padding: var(--spacing-lg);
    max-width: 500px;
}

/* Config panel */
#config-panel {
    position: relative;
}

.config-line {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    font-size: 1.1rem;
}

/* Style inputs */
input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    background: transparent;
}

input[type="range"]::-webkit-slider-runnable-track {
    cursor: pointer;
    border-radius: var(--radius-full);
    background: var(--border);
    width: 100%;
}

input[type="range"]::-moz-range-track {
    cursor: pointer;
    border-radius: var(--radius-full);
    background: var(--border);
    width: 100%;
}

/* Slider thumb */
input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    border: none;
    border-radius: var(--radius-full);
    background: var(--primary);
    width: 16px;
    height: 16px;
}

input[type="range"]::-moz-range-thumb {
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    border: none;
    border-radius: var(--radius-full);
    background: var(--primary);
}

/* Hover state */
input[type="range"]:hover::-webkit-slider-thumb {
    background: var(--primary-light);
}

input[type="range"]:hover::-moz-range-thumb {
    background: var(--primary-light);
}

/* Active state */
input[type="range"]:active::-webkit-slider-thumb {
    transform: scale(1.1);
}

input[type="range"]:active::-moz-range-thumb {
    transform: scale(1.1);
}

#voice-speed-display {
    min-width: 3ch;
    color: var(--text);
    font-variant-numeric: tabular-nums;
}

input[type="number"] {
    border: none;
    border-bottom: 2px solid var(--primary-light);
    background: transparent;
    padding: var(--spacing-xs) 0;
    width: 60px;
    color: var(--text);
    font: var(--default-font);
    font-size: 1.1rem;
    text-align: center;
}

input[type="number"]:focus {
    outline: none;
    border-bottom-color: var(--primary);
}

input[type="number"].range {
    width: 80px;
}

.counter-options {
    display: flex;
    flex: 1;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-top: -0.3rem;
}

.counter-options input[type="checkbox"] {
    cursor: pointer;
    margin-right: 0.4rem;
    width: 1rem;
    height: 1rem;
}

.config-line:has(fieldset) {
    margin-top: -0.3rem;
}

.counter-fieldset {
    flex-direction: column;
    align-items: flex-start;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    text-align: left;
}

.counter-legend {
    padding: var(--spacing-sm);
}

/* Select */
select {
    -webkit-appearance: none;
    appearance: none;
    cursor: pointer;
    border: none;
    border-bottom: 2px solid var(--primary-light);
    background: transparent;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%239ea4a8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-position: right 0 center;
    background-size: 1.2rem;
    background-repeat: no-repeat;
    padding: var(--spacing-xs) var(--spacing-sm);
    padding-right: 1.5rem;
    color: var(--text);
    font: var(--default-font);
    font-size: 1.1rem;
}

select:focus {
    outline: none;
    border-color: var(--primary);
}

/* Buttons */
button {
    transition: all 0.2s ease;
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    border: none;
    border-radius: var(--radius-full);
    background-color: var(--primary);
    padding: var(--spacing-sm) var(--spacing-lg);
    color: white;
    font-size: 1rem;
}

button[disabled] {
    position: relative;
    opacity: 0.5;
    cursor: not-allowed;
}

button[disabled]::before {
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    opacity: 0;
    padding: 4px 8px;
    pointer-events: none;
    content: "check for errors above";
    color: var(--text);
    font-size: 0.8rem;
    white-space: nowrap;
}

button[disabled]:hover::before {
    opacity: 1;
}

button:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
    background-color: var(--primary-light);
}

.primary {
    display: block;
    margin: 0 auto;
    width: 40%;
    font-size: 1rem;
}

#more-options {
    margin: var(--spacing-lg) 0;
    text-align: center;
}

summary {
    cursor: pointer;
    padding: var(--spacing-sm) 0;
    color: var(--text-light);
}

summary:hover {
    color: var(--primary);
}

/* Challenge container */
.challenge-container {
    position: relative;
    transition: all 0.3s ease;
    border-radius: var(--radius-lg);
    background: var(--surface);
    padding: 0 var(--spacing-xl) var(--spacing-xl);
    overflow: hidden;
    text-align: center;
}

.timer-bar {
    position: absolute;
    top: 0;
    right: 0;
    left: 0;
    border-radius: 0;
    background: var(--border);
    width: 100%;
    height: 5px;
    overflow: hidden;
}

.timer-bar-fill {
    transform-origin: left;
    transition: transform 0.05s linear;
    background: var(--primary);
    width: 100%;
    height: 100%;
}

.question .timer-bar-fill {
    background: var(--primary);
}

.answer .timer-bar-fill {
    display: block;
    background: var(--text-light);
}

.challenge-container.question {
    border: 2px solid var(--primary);
}

.challenge-container.answer {
    border: 2px solid var(--text-light);
}

#challenge-display {
    margin: var(--spacing-lg) 0;
    padding-top: var(--spacing-xl);
    color: var(--text);
    font-weight: bold;
    font-size: 3rem;
}

/* Progress bar */
#progress-bar {
    margin-top: var(--spacing-lg);
    border-radius: var(--radius-full);
    background-color: var(--border);
    width: 100%;
    height: 8px;
    overflow: hidden;
}

#progress-fill {
    transition: width 0.3s ease;
    background-color: var(--primary);
    width: 0%;
    height: 100%;
}

/* Controls */
.controls {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

/* Circular button base */
.icon-button {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    transition: all 0.2s ease;
    cursor: pointer;
    border: none;
    border-radius: var(--radius-full);
    background-position: center;
    background-size: 20px;
    background-repeat: no-repeat;
    background-color: var(--primary);
    padding: 0;
    width: 44px;
    height: 44px;
}

.icon-button:hover {
    transform: translateY(-1px);
    background-color: var(--primary-light);
}

.icon-button svg {
    stroke: white;
    fill: none;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
    width: 20px;
    height: 20px;
}

.icon-pause {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 4h4v16H6zM14 4h4v16h-4z'%3E%3C/path%3E%3C/svg%3E");
}

.icon-play {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 3l14 9-14 9V3z'%3E%3C/path%3E%3C/svg%3E");
}

.icon-skip {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M13 19l9-7-9-7v14z'%3E%3C/path%3E%3Cpath d='M2 19l9-7-9-7v14z'%3E%3C/path%3E%3C/svg%3E");
}

.icon-stop {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='12' cy='12' r='10'%3E%3C/circle%3E%3Cpath d='M15 9l-6 6'%3E%3C/path%3E%3Cpath d='M9 9l6 6'%3E%3C/path%3E%3C/svg%3E");
}

/* Errors */
.warning-banner {
    margin: 0 auto var(--spacing-xl);
    box-shadow: inset 0 0 0 1px var(--error); /* inner border hack */
    border-radius: var(--radius-lg);
    background: var(--surface);
    padding: var(--spacing-sm) var(--spacing-lg);
    max-width: 500px;
}

.warning-content {
    padding: var(--spacing-md);
}

.warning-content h3 {
    margin: 0 0 var(--spacing-sm);
    color: var(--error);
    font-size: 1.5rem;
    text-align: center;
}

kbd {
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 0.1rem 0.3rem;
    font-size: 0.9rem;
}

#voice-installation {
    border-radius: var(--radius-lg);
    background: var(--background);
    padding: var(--spacing-sm) var(--spacing-lg);

    ol {
        margin-top: 0;
    }
}

.input-error {
    border-bottom-width: 2px !important;
    border-bottom-color: var(--error) !important;
}

.hidden {
    display: none !important;
}

.visually-hidden {
    clip: rect(0 0 0 0);
    position: absolute;
    margin: -1px;
    border: 0;
    padding: 0;
    width: 1px;
    height: 1px;
    overflow: hidden;
    white-space: nowrap;
}

/* Mode display */
#mode-display {
    margin-top: var(--spacing-md);
    color: var(--text-light);
    font-size: 1rem;
}

.mobile-only {
    display: none;
}

/* Modal stuff */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1000;
    background-color: color-mix(in srgb, var(--primary) 12%, rgba(0, 0, 0, 0));
    width: 100%;
    height: 100%;
    overflow: auto;
}

.modal:target {
    display: flex;
    justify-content: center;
    align-items: center;
}

.help-icon-container {
    position: absolute;
    top: 1rem;
    right: 1rem;
    z-index: 1;
}

.help-icon {
    display: block;
    width: 24px;
    height: 24px;
    text-decoration: none;
}

.modal-backdrop {
    -webkit-backdrop-filter: blur(2px);
    position: fixed;
    top: 0;
    left: 0;
    backdrop-filter: blur(2px);
    width: 100%;
    height: 100%;
}

/* Modal container */
.modal-content {
    display: flex;
    position: relative;
    flex-direction: column;
    margin: var(--spacing-sm);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background-color: var(--surface);
    padding: var(--spacing-md) var(--spacing-xl);
    width: 100%;
    max-width: 42em;
    max-height: 90vh;

    h3 {
        margin: 0;
        color: var(--primary-light);
    }
}

/* Modal body */
.modal-body {
    overflow-y: auto;

    ol,
    ul {
        margin-top: 0.2rem;
    }

    p {
        margin-top: 0.5rem;
    }

    rt {
        font-size: 0.77em;
    }
}

/* Modal header */
.modal-header {
    position: relative;
    top: 0;
    justify-content: space-between;
    align-items: center;
    z-index: 1;
    color: var(--text);
}

.modal-close {
    position: absolute;
    /* I don't like the way I got it to work (align the button), but it works */
    top: -1rem;
    right: 0;
    color: var(--text-light);
    font-size: 2rem;
    text-decoration: none;
}

.modal-close:hover,
.modal-close:focus,
.modal-backdrop:hover~.modal-content .modal-close {
    cursor: pointer;
    color: var(--primary);
    text-decoration: none;
}

/* PWA install banner */
#ios-install-prompt {
    display: none;
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1000;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--primary);
    border-radius: var(--radius-md);
    background: var(--surface);
    padding: var(--spacing-sm);
    min-width: 250px;
    max-width: 90%;
    color: var(--text);
    font-size: 0.88rem;
    text-align: center;
}

#share-icon {
    vertical-align: middle;
}

.ラム {
    color: var(--primary);
    font-weight: bold;
}

.close-button {
    /* Add some padding for a larger click target (offset by negative margin) */
    margin: -8px;
    padding: 8px;
}

#close-ios-install-prompt {
    position: absolute;
    top: 5px;
    right: 10px;
    box-shadow: none;
    border: none;
    background: none;
}

#close-ios-install-prompt:hover {
    transform: none;
}

.icon {
    -webkit-user-select: none;
    cursor: pointer;
    color: var(--text-light);
    user-select: none;
    text-decoration: none;
}

.icon:hover {
    color: var(--primary);
}

/* GitHub corner */
#github-corner {
    position: absolute;
    top: 0;
    right: 0;
    border: 0;
}

.corner-svg {
    fill: var(--primary);
    width: 80px;
    height: 80px;
    color: var(--background);
}

.corner-bg {
    fill: var(--primary);
}

.octo-arm,
.octo-body {
    fill: currentColor;
}

.octo-arm {
    transform-origin: 130px 106px;
}

#github-corner:hover .octo-arm {
    animation: octocat-wave 560ms ease-in-out;
}

@keyframes octocat-wave {

    0%,
    100% {
        transform: rotate(0);
    }

    20%,
    60% {
        transform: rotate(-25deg);
    }

    40%,
    80% {
        transform: rotate(10deg);
    }
}

@media (max-width: 480px) {
    .desktop-only {
        display: none;
    }

    .mobile-only {
        display: inline;
    }

    .modal-content {
        max-height: 85%;
    }

    .corner-svg {
        width: 55px;
        height: 55px;
    }

    #github-corner:hover .octo-arm {
        animation: none;
    }

    #github-corner .octo-arm {
        animation: octocat-wave 560ms ease-in-out;
    }

    .panel {
        padding: var(--spacing-lg);
    }

    .counter-options input[type="checkbox"] {
        margin-right: 0.2rem;
    }

    #challenge-display {
        font-size: 3.5rem;
    }

    .controls {
        gap: var(--spacing-sm);
    }

    button {
        padding: var(--spacing-sm);
        font-size: 0.9rem;
    }

}

@media (prefers-reduced-motion: reduce) {
    #github-corner:hover .octo-arm {
        animation: none;
    }

    ruby rt {
        transition: none;
    }
}